Gas burner



April 3, 1928.

Y P. s. HARPER GAS BURNER INVENTOR.

Filed Jan. 26. 2 Sheets-Sheet l BY I W P. S. HARPER GAS BURNER April 3,1928. 1,664,508

Filed Jan. 26. 1921 2 Sneets-Sheet 2 I INVENTOR. w

TORNEYS.

Patented Apr. 3, 1928.

' UNITED STATES PHILIP S. HARPER, OF CHICAGO, ILLINOIS.

GAS BURNEB.'

Application filed January 26, 1921. Serial No 439,905.

My invention relates to a gas burner and particularly to agas burner ofthe type in household use for cooking purposes.

The primary object of my invention is a gas burner which will providethe advan-L tageous quickheating of the largest burner andautomatically'at the same time provide the efiiciency of the smallestburner when reduced heat is required.

v It has been determined by experiment that a vast amount of heat islost when the flame from a gas burner is out of contact with the bottomof the cooling vessel and this is particularly truev when the ordinarygas burner is turned low and the flame extends but a very short distanceabove the gas burner. In such instances it would be more advantageous toshut off the flow of gas from a portion of the gas burner and allow aportion of the burner to remain burning at full force.

To accomplish this I have devised a burner divided into sections, eachsection having an individual tube where gas to a particular section isbrought into mixture with air; and I have devised a common control meansfor admitting a supply of gas to some or all of the mixing tubes as theconditions require so that one or more sections of the burner can becutoff without disturbing the burning in the remaining sections.

I am aware that burners of this type have been devised wherein any,number of sections may be burned by manipulation of a common cock, butin my burner I claim a particular arrangement of parts so as to make aburner of this type adapted to the space available on the usual gas rane, a burner having a very much smaller an less 4 expensive cock thanheretofore employed,

and a burner of such simplified arrangement as to be more easy ofmanufacture and more reliable in operation. Y

Another object of my invention is the provision of a sectional gasburner having a common means of control for all of the sections soarranged that the force of the burner can be reduced in certain sectionswhile allowing other sections of the burner to burn with full force. Forinstance, the

outside section of the burner can be turned down while the intermediateand center sections are allowed to remain at full force and a slightlygreater turn of the control valve will completely shut ofi the outsidesection and still not afi'ect the flame of the inner sections. Byfurther closing the control valve, the flame-of the intermediate sectionwill be turned lower, the'center section remaining at full force and soon until we have only the center section burning which may also beturned down for a minimum supply of heat. It will thus be understoodthat by varying the condition of the control valve any egree of heatregulation may be obtained.

These and other objects of my invention will be more fully and betterunderstood by reference to the accompanying sheets of drawings, in which1 Figure 1 is a partial sectional plan view of a three-section burnertaken along line II of Figure 2;

Figure 2 is a vertical sectional view'taken on line IIII- of Figure 1;

Figure 3 is a vertical sectional view taken on the line III-III ofFigure 2; and

Figure 4 is a longitudinal sectional view of a two-section gas burner asdistinguished from a three-section burner as shown in Figures 1, 2 and3.

Referring now specifically to the drawings, a gas supply pipe 10 isshown to which a valve casing 11 is secured in any approved manner, thevalve casin 11 havin a valve member 12 extending 51 has a threaded nut13 on the lower end thereof, with a spring 14 interposed between theerethroug which nut 13 and a washer 15 which bears against the valvecasing 11 and provides means for holding valve member in properposition, yet allowing the said valve member 12 to be turned for theadmission of gas as hereinafter described. Extending longitudinally ofthe valve casing 11 and s aced apart from each other is a plurality opassages 16, 17 and 18 which vary in size for a purpose to be disclosed.Extending transversely through the valve member 12 is a plurality ofpassages 19, 20 and 21, the said passages corresponding in size to thepassages 16, 17 and 18 respectively, that is, the passage 19 is the samesize as the passage 18, the passage 20 is the same size as thepassage17, and the passage 21 is the same size as the passage 16. The passages16, 17 and 18 in the valve casing 11 extend on the opposite side of thevalve member 12 from the gas supply pipe 10 and connect with enlargedpassages 22, 23, and 24, the connection in each case being closed'by anadjusting screw 25 by which various degrees of opening may be obtainedbetween passages is initially sup lie areas t opening of its 16, 17 and18 and respective enlarged passages 22, 23 and 24. These enlargedpassages 22, 23 and 24 lead in respective order 1 to a plurality of gasnozzles 27, 28, and 29 in -which are passages 30, 31, and 32 inconnection with respective restricted openings 33, 34, and 35. The gasnozzles 27, 28, and 29 project through a sliding air shield 44 and intothe burner body 36 in such'amanher that restricted openings 33, 34, anddischarge into mixing tubes 40, 41, and 42, each to its respective tube,the said mixing tubes 40', 41 and 42 are placed one above the other in acommon casing,.and said tubes in the form of the invention shown are ina common vertical plane with the gas nozzles 27, 28 and 29. Of the saidmixin tubes 40,

41, and 42, each has openings 9 to t e outside air the area of whichopenings may be adjusted by loosening the screws 43 and mov- '1ng airshield 44 to or from the burner 36 as the case may be. The burner body36is divided/into a plurality 'of sections 37, 38,

and 39 which connect respectively to beforementioned mixing tubes 40, 41and 42. Each section 37 38, and 39 has a number of the.

usual openings 26 through which the combustible mixture asses and burnsfrom the tep of burner b0 y 36 in the usual manner. It will be notedthat section 37 extends around the outer ed e of burner body 36 andwith" gas through the passage 16 in va ve casing 11; in like mannersection 38 is supplied by passage 17 and section 39 by passage 18. Itwill also be noted that the passage 16 is smaller in size than either ofthe other passages 17 and 18 so thatas the member 12 is turned thepassage 16 is closed before either of the other pas-.

sages 17,- and 18 are closed. Consequently gas will pass to sections 38and 39 with section 37 c osed 011' and for the same reason gas willstill pass to section 39 after the closing off of sections 37 and 38.Now the passages 16, 17 and 18 are sufliciently difi'erent in size, eachfrom the remaining, and sufficientl large in size as compared with otherlirough which the gas must pass that gas sup ly to any section is not apreciably dim'inis ed on the turning of the va vemember 12 until the nextsection situated outside from the one in question is entirely cut 03..

This result is more easily accom lished in .the design since section 38is smal er. in size than the section 37 and requires less gas for a fullheight flame, consequently the artial larger supply port 1 may easily bemade pro rtionate to its required amount of gas; an in the case of thesmallest section 39 being supplied by the largest port 18, it is evidentthat only a very small opening of this port-is required to su ply thissmallest section with its normal ful gas supply. It will be seen that asthe valve member 12 is turned toward the closing POSI- position to makea similar adjustment of.

screws 25- to givethe desired full height flame on the'normal gaspressure employed before the burner. Then on the regular operation it isonly necessar to control the burnin by the turning of t e valve member12 in t e customary manner. I 'By inspection of the flames, as iscustoma'ry in any gas burner when turning the gas lever downward, anoperator in entirely cutting off one section may turn the lever just sofar as to very slightly lower the flames of the next innermost section,and in this wa make certain that the section being out o is'entirely cutoil and that there is no s'mall amount of gas still escaping.

.In Figure 4 I have illustrated a modified form of my invention and inwhich a burner body 45 is shown havin two sections 46 and 47, thesection 47 extendmg circumferentially around the outer portion of theburner body 45 and being supplied with gasin much the same manner as theburner shown in Figures 1, 2 and 3 and previously described. A gassupply pipe 48 is provided having a valve &

casing 49 secured thereto through which a that in this form of myinvention I have omitted a permanent adjusting screw -forthe gas to theouter section 47 as the height of maximum flame from this section couldbe regulated by the valve member 50 or this part of the burner could beequipped with an adjust ble nozzle in accordance with present practice.Passages 54 and 55 extend through the valve mem er 50'and are the samesize as the passages 51 and 52 respectively. Gas nozz es 56 and 57 aresecured to the member 49 and have passages 58 and 59 respectivelytherein with restricted communicating passages 60 and 61 which dischargeinto the mixing tubes 62 and 63 laced one above the other in the burner45. An opening 64 is provided through w ich air is admitted to the.mixing tube 62 and on which in this instance no adjustment is suppliedas is often customary in small burners. The usual rotating member 67 andstationary member 65 are supplied J for adjusting air supply to largemixing tube 63. It will be understood that by turning the member 50 inthis form of my invention that the assage 52 is closed prior to theclosure of t e passage 51 and thereby the flame through the outside;section 47 of the burner can be turned down or controlled in any mannerwhile section 46 is burning at full capacity. By further turning of thevalve member 50 the gas'is completely shut ofi from the mixing tube 63which leads to the outer section 47 of the burner and thus completelyshuts 03 this section while allowing the center section 46 to continuein full operation or be reduced as required.

It can be seen from the fore oing that I have devised a fuel burner whichas all the combined advantages of a plurality of burners of difierentsizes and, as Well, have incorporated other advantages which will beap-.

parent without further description.

Wh1le I have described more or less preclsely thedetails ofconstruction, I do not wish to be understood as limiting myself thereto,as I contemplate changes in form and the proportion of parts and thesubstitution of equivalents as circumstances may suggest or renderexpedient withoutdepartin from the spirit or scope of my invention.

I claim: 1. In a gas burner, a burner body member having a plurality ofheating sections, said sections being arranged within the area coveredby the usual cooking vessel, and hav- 1 ing a plurality of burner portsin the upper of each ofsaid burner sections, a plu rality of mixingtubes connecting directly into said sections, each tube to itsrespective section, each of the said mixing tubes bein positioned oneabove the other, and eac tube separated from another by a substantiallyhorizontal wall; a valve casing having a plurality of passages thereinleading to the said mixing tubes; and control means I in the said valvecasing.

2. In a gas burner, a burner body member Y having a plurality of heatingsections, said sections being arraHged within the area coveredby theusual cooking vessel, and having a plurality of burner ports in theupper side of each of the said burner sections, a plurality of mixintubes connecting directly into the said sections, each tube to itsrespective section, the said mixing tubes comprising passages in a.common casing, each of the said mixing tubeS being positioned one abovethe other, and each tube separated from another by a substantiallyhorizontal wall, a valve casing having a plurality of assages thereinleading to the said mixing tu es, and I control means in the said valvecasing.

3. In a gas burner, a burner body member having a plurality of heatinsections, said sections being arranged within the area cov- "ered by theusual cooking vessel, and having a plurality of burner ports in-theupper side of each of said burner sections, a plurality of mixing tubesconnecting directly into said sections, each tube to its respectivesection, each of the said mixing tubes being positioned in a commoncasing one above the other, and each tube separated from another by asubstantially horizontal wall, a valve casing having a plurality ofpassages therein leading to the said mixing tubes, and a rotatable valvemember so arranged in said casing as to intercept said passages atdifierentpoints along the axis of the said rotatable valve member.

4:. A gas burner comprising a plurality of heating sections, saidsections being arranged within the area covered by the usual cookingvessel, and having a plurality of burner ports in the upper side of eachof a substantially horizontal wall, a valve casing having a plurality ofpassages therein leading to the said mixing tubes, said passages beinpositioned in a common vertical plane, and control means in the saidvalve casing. v

5. A gas burner having a plurality of burner sections and a plurality ofmixing tubes equal to the number of said burner sections, a' gas supplypipe, a valve casing having a plurality of passages having differentdiameters, a rotatable valve member having transversely extendingpassages therethrough corresponding insize and number to the passages insaid valve casing and positioned 'in the same vertical plane, wherebywhen the valve member is turned some of the said passages are open whileothers are closed;

'6. In a gas burner, a burner bodymember having a plurality of heatingsections, said sections'being arranged within the area covered by theusual cooking vessel, and having a plurality of burner ports in theupper side of each of the said burner sections, a pluralit of mixingtubes connecting directly into t e said sections, each tube to itsrespective section, a valve casing having gas supply passagestherethrough leading to the said mixing tubes, a rotatable plug intheisaid casing having passages corresponding in size to assages 1n thesaid cas1ng,-sa1d passages ifi'ermg in diameter whereby on rotation ofthe said plug the smaller passages close before the larger.

7. In a gas burner, aburner body mem- I of burner ports in the upper sieach of said burner sections, a plurality of mixing 7 tubes connectingdirectly into the said sections, each tube to its respective section, av lve casing having gas supply passages therethrough leading to saidburner sections by way of said mixing in the said casing tubes, arotatable plug aving passages corresponding in size to passages in thesaid casl0 ing, said passages differing in diameter whereby on rotationof the said plug the smaller passages close before the larger, a smallerone of said passages leading to a larger one of said burner-sections.

Signed at Chicago, Illinois, this 18th'day of January, 1921. l

. v PHILIP S. HARPER.

